66196183 has 4 divisors (see below), whose sum is σ = 68478840. Its totient is φ = 63913528.

The previous prime is 66196127. The next prime is 66196187. The reversal of 66196183 is 38169166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66196183 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66196187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141285 + ... + 1141342.

It is an arithmetic number, because the mean of its divisors is an integer number (17119710).

Almost surely, 2^66196183 is an apocalyptic number.

66196183 is a deficient number, since it is larger than the sum of its proper divisors (2282657).

66196183 is a wasteful number, since it uses less digits than its factorization.

66196183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282656.

The product of its digits is 46656, while the sum is 40.

The square root of 66196183 is about 8136.1036743640. The cubic root of 66196183 is about 404.5240214251.

It can be divided in two parts, 66 and 196183, that added together give a square (196249 = 443²).

The spelling of 66196183 in words is "sixty-six million, one hundred ninety-six thousand, one hundred eighty-three".